Add all of your ingredients into a large mixing bowl.
Mix everything together until smooth.
If it's not non-stick, coat whatever you're baking it in with cooking spray (I used 2 1 ½ cup dishes).
Pour in your mix/evenly distribute if you're making smaller servings.
Bake it on 350F/176C for around 50-55 minutes for the 1 ½ cup dishes.
One big dish? Add more time. Smaller dishes? Use less time.
Remove it/them and let it cool (I like to put it into the fridge to fully cool).